Infiniti QX56 (JA60). Manual - part 876

SN

SONAR CONTROL UNIT FOR REAR SONAR SYSTEM

SN-29

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

ABNIA0082GB

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< ECU DIAGNOSIS >

SONAR CONTROL UNIT FOR REAR SONAR SYSTEM

DTC Index

INFOID:0000000005146209

Fault Code

Malfunction

Service Procedure

11

Rear sonar sensor LH outer

1.

Check harness for open or short.

2.

Replace sonar sensor.  Refer to 

SN-49, "Removal and In-

stallation"

.

12

Rear sonar sensor LH inner

13

Rear sonar sensor RH inner

14

Rear sonar sensor RH outer

21

Sonar buzzer

1.

Refer to 

SN-17, "Diagnosis Procedure (With Rear Sonar 

System)"

.

2.

Check harness for open or short.

3.

Refer to 

SN-45, "Symptom Table"

.

22

Sonar system OFF indicator

1.

Refer to 

SN-19, "Diagnosis Procedure (With Rear Sonar 

System)"

.

2.

Check harness for open or short.

3.

Refer to symptom table.

23

Sonar system OFF switch

24

Sonar control unit

Replace sonar control unit. Refer to 

SN-50, "Removal and In-

stallation"

.

SN

SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM

SN-31

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM

Reference Value

INFOID:0000000005146210

SONAR CONTROL UNIT HARNESS TERMINAL LAYOUT

TERMINALS AND REFERENCE VALUES FOR SONAR CONTROL UNIT

AWNIA1547ZZ

Terminal

(color)

Item

Condition

Reference value (V)

(Approx.)

Ignition 

switch

Operation

1 (G/R)

Sonar control unit 
power

ON

—

Battery voltage

2 (L)

Sonar buzzer drive 
signal

ON

Object sensed

Battery voltage

3 (G/W)

Reverse signal

ON

Transmission gear selector lever in R posi-
tion

Battery voltage

Transmission gear selector lever not in R 
position

0

4 (B)

Sonar control unit 
ground 

—

—

—

5 (BR/Y)

Sonar system OFF 
indicator output

ON

Sonar system OFF 

switch 

ON

0

OFF

Battery voltage

6 (R)

Rear sonar buzzer 
return

ON

—

0 - 12 (variable)

8 (G/W)

K-line

ON

—

—

9 (LG/B)

Rear sonar sensor 
power

ON

Ignition switch ON

Battery voltage

11 (LG)

Sonar system OFF 
switch signal

ON

Sonar system OFF 
switch

ON

0

OFF

Battery voltage

12 (Y)

Rear sonar sensor 
ground

ON

—

—

13 (LG)

Rear sonar sensor 
signal - RH inner

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in R po-

sition

• Distance obstacles

Battery voltage

14 (O)

Rear sonar sensor 
signal - LH inner

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in R po-

sition

• Distance obstacles

Battery voltage

15 (P)

Rear sonar sensor 
signal - LH outer

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in R po-

sition

• No obstacles

Battery voltage

SN-32

< ECU DIAGNOSIS >

SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM

16 (GR)

Rear sonar sensor 
signal - RH outer

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in R po-

sition

• No obstacles

Battery voltage

17 (LG/B)

Front sonar sensor 
power

ON

Ignition switch ON

Battery voltage

18 (GR/R)

Park position signal

ON

Vehicle in PARK

12

19 (GR)

Front sonar sensor 
signal - RH outer

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in a for-

ward drive gear

• Distance obstacles

Battery voltage

20 (LG)

Front sonar sensor 
signal - RH inner

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in re-

verse or a forward drive gear

• No obstacles

Battery voltage

21 (W/R)

Vehicle speed signal

ON

Speedometer operated
[When vehicle speed is approx. 40 km/h (25 
MPH)]

NOTE:
Maximum voltage may be 12V due 
to specifications (connected units).

23 (R)

Front sonar buzzer 
return 

ON

—

0 - 12 (variable)

24 (P)

Front sonar sensor 
signal - LH outer

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in re-

verse or a forward drive gear

• No obstacles

Battery voltage

25 (O)

Front sonar sensor 
signal - LH inner

ON

• Sonar system OFF switch ON
• Transmission gear selector lever in a for-

ward drive gear

• Distance obstacles

Battery voltage

26 (Y)

Front sonar sensor 
ground

ON

—

—

Terminal

(color)

Item

Condition

Reference value (V)

(Approx.)

Ignition 

switch

Operation

PKIC0643E